Use of an Electronic Patient Portal Among Disadvantaged Populations. Jessica S. Ancker MPH, PhD 1, Yolanda Barrón MS 1, Maxine L. Rockoff PhD 2, Diane Hauser MPA 3, Michelle Pichardo MPH 3, Adam Szerencsy DO 3,4 & Neil Calman MD 3 Journal of General Internal Medicine volume 26, pages 1117-1123 (2011)Cite this article.